To: <amps@contesting.com>
> Date: Wed, 27 May 1998 21:08:33 -0700
> From: Shawn Tayler <stayler@powernet.net>
> Subject: [AMPS] Triode Amp Out/In isolation
> To: Amps <amps@contesting.com>
> Reply-to: Shawn Tayler <stayler@powernet.net>
> Hi,
>
> Doing some teswting on my 8938 Stripline (K1FO) design amplifier and found
> the output to input isolation (at
> tuned frequency to be 14dB. This is about the operational gain of the amp.
> The isolation is over 50dB andf
> even exceeds 80dBat all other freqs from 100Khz to 1Ghz. Is this an ok
> figure for a GG triode amp? Its always
> been stable during normal use, never a snap, crackle, or pop...
Oscillations sometimes do, but much more often don't, cause a snap,
crackle or pop.
How did you measure the S12 or S21?
73, Tom W8JI
w8ji.tom@MCIONE.com
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